Mixing valve

Abstract

A mixing valve 10 has a cartridge assembly 20 therein which has stationary plate 22 having hot and cold openings 24 and 26 and a movable plate 28 slidably mounted thereupon. The movable plate has a surface 29 abutting plate 22 free from apertures. Valve plate 28 moves translationally between an open and closed position and rotated between a cold and hot position. The valve plate can be rotated through approximately 180 degrees with a tooth 66 of plate 28 leveling the mixing profile at the comfort zone between the hot and cold positions (FIG. 1). The valve plate 28 is controlled by a drive lever that can be either rotated about a vertical axis or moved in a vertical plane.

The embodiments in which an exclusive property or privilege as claimed are defined as follows: 
     
       1. A flow control mixing valve characterized by a housing structure;   said housing having a first port and second port;   each port having a radially outer arcuate shaped periphery of common radius with a common center point;   each port having a valve seat at an end thereof surrounding each port;   a movable circular valve plate having an arcuate periphery abutting said valve seat and movable to a closed position so that said plate has its arcuate periphery displaced radially outwardly of said arcuate periphery of each port;   said circular plate being slidably movable on said valve seat to an open position so that a portion of its arcuate periphery is selectively displaced radially inwardly from the respective arcuate periphery of said first, second, or both ports to uncover a portion of said first, second, or both ports in varying ratios;   a control means for slidably moving said movable plate over said valve seat and ports; and   each of said ports passes through a fixed plate, said fixed plate has at least one port for said first fluid and two ports for said second fluid with said two ports for said second fluid divided by a bar that abuts said movable plate.   
     
     
       2. A mixing valve as defined in claim 1 wherein said bar divides said two ports for said second fluid in a symmetrical fashion with each of said two ports being approximately equal in size. 
     
     
       3. A mixing valve as defined in claim 1 wherein said bar divides said two ports for said second fluid in an asymmetrical fashion with each of said two ports having different sizes.